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Method and apparatus for producing unique radiation spectra

a radiation spectrum and unique technology, applied in the direction of optical radiation measurement, instruments, spectrometry/spectrophotometry/monochromators, etc., can solve the problems of many expensive and fragile filters, methods that only permit contiguous bands of energy to reach the sample, etc., and achieve low-cost components

Inactive Publication Date: 2005-08-16
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about using a broadband source of energy to create a new spectrum with desired characteristics. The apparatus includes a separation means to separate light into a continuum of wavelengths, a blocking element with a desired contour to allow a portion of the light to pass through, and recombination means to recombine the remaining light. The invention can be used in various fields such as biological analysis and entertainment. The method involves separating light, blocking a portion of it, and recombining the remaining portion to create the desired spectral intensity profile. The technical effects of the invention include the ability to create new spectra with desired characteristics and the use of low-cost components.

Problems solved by technology

Although there are methods to produce bands of spectra using interference filters, or some variation of spectra separation as used in spectroscopes, these methods exhibit the common deficiency of only permitting contiguous bands of energy to reach the sample.
Some research or analytical applications require many of these expensive and fragile filters to conduct routine laboratory evaluations.

Method used

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  • Method and apparatus for producing unique radiation spectra
  • Method and apparatus for producing unique radiation spectra
  • Method and apparatus for producing unique radiation spectra

Examples

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Embodiment Construction

[0026]Referring to FIG. 1, and in a preferred embodiment of the present invention, there is shown a spectral profiling device 5 for producing various desired spectra 10 from broadband light 15. Spectral profiling device 5 includes a lens assembly 20, a transmissive holographic grating 25, a blocking element 30, a toroidal mirror 35 arranged in series with respect to one another. Spectral profiling device 5 is configured to receive broadband light from an input fiber optic bundle 40 and to provide a desired spectral intensity profile 10 to an output fiber optic bundle 45. In turn, output fiber optic bundle 45 is used to produce illumination for a given device. This given device may include, for example, a sample stage of a microscope (not shown).

[0027]In an alternative preferred embodiment of the present invention, a ruled reflective grating or a ruled transmissive grating is used in spectral profiling device 5 in place of transmissive holographic grating 25.

[0028]The energy exiting ...

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Abstract

Apparatus and methods are disclosed for providing a desired spectral intensity profile from a broadband light source. The apparatus comprises separation means for separating light provided by the broadband light source into radiation having a continuum of wavelengths; a blocking element having a first side and a second side, the first side having a two-dimensional surface with a desired blocking contour configured thereon, the blocking element positioned relative to the separation means so as to receive the radiation separated into the continuum of wavelengths onto the first side thereof and allow a portion of the radiation to pass from the first side to the second side, wherein the portion of the radiation conforms to the desired blocking contour; and recombination means for recombining the portion of the radiation conforming to the desired blocking contour into the desired spectral intensity profile.

Description

REFERENCE TO PENDING PRIOR PATENT APPLICATION[0001]This patent application claims benefit of pending prior U.S. Provisional Patent Application Ser. No. 60 / 376,439, filed May 1, 2002 by David A. Morrison for METHOD AND APPARATUS FOR PRODUCING UNIQUE RADIATION SPECTRA, which patent application is hereby incorporated herein by reference.FIELD OF THE INVENTION[0002]This invention is related to optical light source apparatus and methods in general, and more particularly to apparatus and methods for providing unique radiation spectra.BACKGROUND OF THE INVENTION[0003]It has become apparent, particularly in the field of biological sciences, that there exists a need for radiation sources that can be customized so as to produce a spectrum possessing a set of desired characteristics. This need ranges from illuminating a sample for microscopic evaluation to producing a desired spectrum for the purpose of designed stimulation of cellular activity.[0004]Although there are methods to produce bands...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01J3/12G01J3/00G01J3/18G01J3/10G01N21/31
CPCG01J3/10G01N21/31G01J3/0229G01J2003/1857G01N2021/3133G01N2021/317G01N2021/3188
Inventor MORRISON, DAVID A.
Owner TELEFON AB LM ERICSSON (PUBL)
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